Adjustable door operator



June 11-, 1929. w SHONNARD v 1,716,567

ADJUSTABLE DOOR OPERATOR Filed March 8, 1926 2 Sheets-Sheet 2 avwemtoz35 4126mm, 2 g {g Patented June .11,

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HAROLD W. SHONNARD, OF MON'IOLAIR, NEW JERSEY,'ASSIGNOR TO ELEVATOR SUP-IELIES COMPANY, INQ, A CORPORATION OF NEW JERSEY.

ADJUSTABLE DOOR OPERATOR.

Applicationfiled March s, 1926. Serial No. 93,088.

The present invention relates to adjustable means whereby either a doorchecking means or a mechanical door closer, or both, may be made tooperate successfully with doors or gates of different widths.

Vhile the invention may be used in connection with doors for anypurpose, it is particularly useful in connection with sliding or foldingdoors or gates on elevators, and will be herein shown and described withone form of gate commonly employed on elevators, by way of example.

In elevator practice it is usual to employ both sliding doors, hung uponrolling sheaves, and folding gates constructed of bars pivoted togetheronthe lazy tongs? principle, which fold up intoa small space when openedand expand across the door opening when closed.

My invention. may be used with either of these types of doors, and isapplicable either with a door check to prevent'slamming or withpneumatlc or other-power means foroperating the door or withbothtogether. In this specification I have illustrated the-1nvention as usedwith both of these, but it is to be understood that theinvention maybeused with manually operated doors if desired.

The doors or gates used in elevator practice are of different widths,and it has been hitherto customary to construct the door checking anddoor'operating means for each door in accordance with the distancethrough which it is intended to be moved back and of the invention toprovide means for the purpose named that may be used by any ordinarymechanic without the use of special tools. The invention is illustratedby way of example in a preferred form in the accompanyin drawings,wherein Figure 1 1s a a view in elevation of a folding gate equippedwith my invention, and Flgure 2 1s a similar view ona larger scale ofthe adjustable connection as used with a door checking means alone. I VV In Figure 1 there 18- shown at 10 a folding gate of the type wellknown in elevator practice which is opened and closed by being folded orslid back and forth in its'own plane, either by hand or by means of aswinging arm 11 which is pivotally attached to the bracket 12; 'lhisbracket slides up and down on a bar 13 attached to the front edgeofthe gate in the usual manner. This arm may be-used either to connectthe gate with any well known form of checking means, as for instancethat shown at 1a, or it may be used to operate theigate by transmittingthe necessary. effort from a pneumatic or other me-, chanical doorcloser shown at 15.

In the construction shown in Figure'l the arm 11 is employed in bothcapacities. For this purpose I employ 'a rocking lever 16, the

bottomof which is pivotally attached just above the gate 10, andpreferably on top of thedoor'frame, assh-own.

The rocking lever 16 is operatively connectedwith the door check 14: bymeans of the links 17 andf18,the latter of which is provid'ed with anadjustable a slot 20 in lever 16. v

Where the gate'is operated mechanically, and inthe form shown, aconnecting rod 21 is appropriatelyattached to the link18 and connects itwith'the mechanical operator 15:

Upon the front the rocking lever 16 there is provided a channel barhaving parallel raised sides or rails 22, and this channel is pivoted tothe rocking lever'16 so as to be centered upon the same axis ofrevolution as the rocking lever itself. r

The upper end of the arm 11 is fixed in the channel between the rails 22by means of the bolts 23 orotherwise. v

An adjustable bolt 24 passes through the bolt 19 working in end of thearm 11 and the channel through] curved slot 25 in the rocking lever 16to secure the channel 22 in any desired angular position with respect tothe rocking lever 16.

It will be clear that the construction shown is adapted to the operationof doors of diiferent widths. by making the adjustmentsprovided for bythe construction described.

If a'narrower door than that shown is to be operated the bolts 19 and 24are loosened and the bolt 19 is moved to a higher position within theslot 20 and there tightened.

The Change in angular position of the swinging lever 16 necessitated bythis opera-. tion does not alter the initial position of the arm 11shown in Figure 1, because relative movement between said arm and thelever-16 is permitted'bythe loosening of the bolt 24.

- operated by bringing the bolt 19 lower down in the slot 20 thanisshown in Figure 1. The adjustment permitted by movement of the bolt 24Within its slot makes it possible to adjust the. entire device todifferent extreme posit-ions of the moving edge of the gate and,therefore, permits not only the extent a of a movement of the door to beregulatedbut also permits adaptation to different extreme positionscorresponding to the posltions of the vertical sides of the dooropening.

The invention is not limited to the precise details shown but isintended to be claimed to cover any adjustable connection between thedoor or gate on the one ,-.hand and a door operator on the other hand(either a door check or door mover or both) according to the size andposition of the .door opemng to be accommodated. I

' .What I claim is V v 1. A sliding door, a door operator, a rockingmember operatively connected with -sa1d operator, a fulcrum for the rockng member fixed with relation to said door, an arm adapt ed to swingupon the same center assaid rockingmember and in a plane parallelthereto and operatively connected with the door and means for securingsaid arm in different angular positions with respect to the rockingmember.

r 2. Apparatus as in claim 1, wherein the rocking member is providedwith a channel pivotally attached thereto and wherein the arm is fixedwithin said channel.

3. Apparatus as in claim 1 wherein the rocking member has a curved slotand wherein the arm is pivotally attached to the rocking member and hasa bolt passing through said curved slot.

4. Apparatus as in claim 1 wherein the rocking member is connected withthe operator-by an arm provided with an adjustable bolt movable in aslotin the rocking member.

5. Apparatus as in claim 1 wherein the door operator comprises a doorcheck, a mechanical door-moving means, connecting means between thecheck and the door on one side and connecting means between the 'checkand the door moving means on the other side.

6. A sliding door, and operating means therefor, said operating meanscomprising a lever, a fulcrum therefor fixed with relation to said door,an arm, and means for fixing the arm to the lever indifferent angularpositions, a link, means for pivotally'connecting said link to thelever, means'for fastening said pivotal connection to said lever at differentradial distances from the fulcrumof said lever, and means forexerting force through said link. I v V In testimony whereof I havehereto afiixed my signature this 5th day of March,

- HAROLD W. SHONNARD.

